Staffers line the aisle at the House Oversight and Government Reform Committee meeting on Jan. 24, 2017. (Bill Clark/CQ Roll Call file photo)

If you visited RollCall.com on a mobile device recently, you may have noticed a pop-up ad announcing that “You’ve been selected for a chance to get the $1,000 Amazon Gift Card, Apple iPhone X 256G or Samsung Galaxy S8!” (or something similar).

Sadly, you didn’t win anything. We know other news websites have had this issue as well, so you may have seen the same ad or a similar one elsewhere.